HENRY SKINNER. 203 



wide. Besides the much enlarged anteapical spots, which are paler 

 yellow than the other spots, there are three oblique pale yellow spots 

 on the costa before the apex. The lower three spots of the submar- 

 ginal band are widened, so that the inner upper corner almost reaches 

 the cell. Hind wings, besides the yellow scales along the margin, 

 have a discal row of four small spots reaching either margin. Under- 

 side as in the male, except that the spots are prominent, and the spots 

 near the costa of the fore wings are more washed with white." 



Habitat. — From South Carolina to the Gulf of Mexico. 



Var. coloradensis Riley, Tr. Acad. Sci. St. Louis, 3, 566, 568, 

 1877. 



" This Colorado form is remarkable for its small size 

 and the paleness of its colors compared with those reared 

 farther South on the larger leaved, more luxuriant Yuccas. 

 It is also distinguised by a second narrow white line on the 

 underside of secondaries just outside the larger triangular 

 white spot from costal vein ; also by the dark spots on this 

 underside of secondaries, generally having a white pupil, a 

 tendency thereto being noticeable in the Carolina specimens." 



Habitat. — Colorado. Larva feeds on ? Yucca angusti folia. 



Larva feeds on Yucca aloi folia, gloriosa and filamentosa, 

 burrowing in the stems and roots. 



Meg"atliyiiius cofaqui Strecker, Proc. Acad. Nat. Sci., Phila., 28, 

 148, 1876 ; Streck., Lep. Rhop. Het., pi. 15, f. 2. 

 " Female. — Expands two and one-sixth inches. Head dark brown ; 

 palpi whitish ; thorax brown, mixed with hoary, posterior half, above 

 clothed with ^^ellowish hair ; abdomen brown ; antennae black above, 

 white beneath, terminations black. Upper surface of wings blackish 

 brown. Primaries with an exceeding irregular, bright, deep yellow 

 band extending from vein one to the subcostal nervure ; the outer edge 

 of this band is rather regular from veins one to four, though further 

 removed from the extreme margin at the latter than at the former ; 

 from veins one to two it is narrow, from veins two to four it is nearly 

 three times as broad, extending to where vein three joins the median 

 vein, the balance of it is within the discoidal cell and is narrow, of 

 about the same width as it is between veins one and two ; the portion 

 of this nearest the costa is paler in color than the rest. Between veins 

 four and six, exterior to this band is a mark composed of two small 

 almost connected yellow spots. Interior to these, between veins six 

 and nine, is a narrow yellowish-white mark. Midway between the 

 inner edge of the large yellow band and the base of wing, and between 



TRANS. AM. ENT. SOC. , XXXVII. 



